Category: Promotion

When Two is Not Enough

by lefthandeddragon, posted in games, Promotion, Queen, Uncategorized

Every player values his queen. And there is little wonder why. It is the most powerful piece of the game and with it, sometimes by itself, quickly mate the opposition. Take a look at Scholar’s Mate (1.e4 e5 2.Bc4 Nc6 3.Qf3 Nd4 4.Qxf7#), Fool’s Mate (1.f4 e5 2.g4 Qh4#), even a trap in the Petrov (1.e4 e5 2.Nf3 Nf6 3.Nxe5 Nxe4 4.Qe2 Nf6 5.Nc6+).

It stands to reason that a player would welcome another queen joining his ranks. Even more so if the opponent fails to do the same. Imagine the possibilities!

But chess is not so simple. A second queen does not automatically confer or guarantee victory.

Let’s look at some opening examples.

Littlewood-Andrews
England 1981
[D22]
1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 Bg4 5.Bxc4 e6 6.h3 Bh5 7.Nc3 a6 8.O-O Nbd7 9.e4 e5 10.g4 exd4 11.gxh5 dxc3 12.e5 cxb2 13.exf6 bxa1=Q 14.Bxf7+! Kxf7 15.Qd5+ Ke8 16.f7+ Ke7 17.Re1+ Ne5 18.Bg5mate 1-0

Sprenger (2199)-Danner (2369)
Austrian Ch., 2002
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Nc6 8.e5 h6 9.Bh4 Nxd4 10.exf6 Nf5 11.fxg7 Qxh4+ 12.g3 Nxg3


13.gxh8=Q Ne4+ 14.Ke2 Qf2+ 15.Kd3 Nc5+ 16.Kc4 b5+ 17.Nxb5 axb5+ 18.Kc3 b4+ 19.Kc4 d5+ 20.Kb5 Bd7+ 0-1

So, what happened? Well, in both cases, the promoted queen finds herself in a corner on the board. A corner, as you probably know, is a square in which the queen has less moves, less mobility, and less power than existing on the side or in the center of the board.

And since the promotion occurred in the opening, there are many pieces on the board that block or hinders the movement of the newly born queen.

The side with the extra queen usually has to spend an extra tempo or two to get the brand-new queen into play.

All of which subtracts from usually positive aspect of an additional queen.

Let’s take a look at two other games.

The first shows a White king under tremendous pressure from Black’s knight, passed pawn, and sole queen. It also shows how fond some players have for their multiple queens, and an unwillingness to give one of them up.

Chigorin-Blackburne
Vienna, 1898
1.e4 e6 2.Qe2!? (Chigorin is credited with coming up with this move. Its main goal is to harass Black’s development as the queen on e2 can easily be put into play on either side of the board.) 2…b6 (2…c5 is an alternate move.) 3.Nc3 Bb7 4.Nh3 Nc6 5.d3 g6 6.Bg5 Be7 7.Qd2 Bxg5 8.Nxg5 Qe7 9.f4 O-O-O 10.O-O-O f6 11.Nf3 Nh6 12.d4 d5 13.e5 f5 14.Bb5 a6 15.Be2 Nf7 16.h3 h5 17.Rhg1 Rdg8 18.g3 Kb8 19.Kb1 Ka7 20.Ka1 Nb8 21.Rb1 Nd7 22.b4 b5 23.a4 c6 24.Qc1 Ra8 25.a5 Rag8 26.Na2 g5 27.Qe3 Nf8 28.Nc1 h4 29.gxh4 gxf4 30.Qf2 Rxg1 31.Qxg1 Rh6 32.Nd3 Ng6 33.h5 Nh4 34.Nxh4 Qxh4 35.Qg7 f3 36.Bxf3 Qxd4+ 37.Rb2 Nd6 38.Qxh6 Nc4 39.Qf4 Qc3 40.h6 c5 41.h7 cxb4 42.h8=Q b3! (Counterplay!) 43.Qf8 bxc2 44.Qc5+ Ka8

45.Qfd4?? [Chigorin himself analyzed his blunder. White wins after 45.Qfxc4! bxc4 (45…dxc4 46.Qc8+) 46.Qb4 Qxb4 47.Rxb4 cxd3 48.Kb2. 45.Qc1 +-.] 45…Qxa5+ 0-1

The second one demonstrates how a queen in the corner can still be more of a spectator on the corner than a contributing member, even in an endgame. And how an Initiative can trump the extra material.

WFM Natalya Tsodikova (2196)-FM Jon Jacobs (2200)
Mechanics Institute vs. Marshall match
chess.com, Oct. 15 2019
[GM Nick de Firmian. “Mechanics’ Versus Marshall”, CL, Jan. 2020]
1.Nf3 Nf6 2.g3 g6 3.b3 Bg7 4.Bb2 0-0 5.Bg2 d5 6.0-0 c5 7.c4 d4 8.b4 Nc6 9.bxc5 e5 10.d3 Nd7 11.Nfd2 Nxc5 12.Ba3 Qa5 13.Ne4 Nxe4!? (An interesting Exchange sacrifice for the initiative. Black has active pieces for the material and dark square play.) 14.Bxf8 Bxf8?! (Even stronger was 14….Nxf2! 15.Rxf2 Bxf8. The weakness of e3 would add to Black’s compensation for the Exchange.) 15.Bxe4 Qc7 16.Nd2 a5 17.Bg2 f5 18.a3 a4 19.Qc2 Bc5 20.Rfb1 Qe7 21.Qb2 Ra6 22.Qc1 Kg7 23.Rb5 Na7 24.Rb2 Nc6 25.Raa2 g5 26.Rb1 Kg6 27.Rb5 Na7 28.Rbb2 Nc6 29.g4?! (White goes for the win! This was a hard-fought match and the players go all out, yet the position now becomes very sharp.) 29….Bxa3 30.gxf5+ (Bad is 30.Rxa3 Qxa3 since 31.Rb6 is not check.) 30….Bxf5 31.Ne4? Bxb2 32.Qxb2 Qb4 33.Qc1 h6 34.Ng3 a3 35.Nxf5 Kxf5 36.Be4+ Kf6 (Black is winning on the queenside, but his king is unsafe on the opposite wing. Natalya quickly switches fronts.) 37.Qf1! Kg7 38.Qh3 Ne7 39.Qd7 Kf6 40.Qxb7 Rb6?! (Here Jon misses his best chance. He should play for the endgame where his king is safe. 40….Qxb7! 41.Bxb7 Rb6 42.Be4 Rb3 is difficult for White, e.g. 43.Kf1 Ke6 44.Ke1 Kd6 45.Kd2 Kc5 46.Kc2 Kb4 with full control of the board.) 41.Qa8!? Qb1+ 42.Kg2 Qxa2 43.Qf8+ Ke6 44.Qxh6+ Kd7 45.Qxb6 Qb2 46.Qa7+ Ke8 47.Qa4+ Kf8 48.Qd7?! (Best was 48.Qa8+ Kf7 49.Qa7 a2 50.Bd5+ Kf6 51.Qa6+ Kg7 52.Qa7 Kf8 53.Qa8+ Kg7 54.Qa7 forcing the draw.) 48….a2 49.Bd5 Nxd5 (Black still has winning chances after 49….Qb6.) 50.cxd5 a1=Q

51.Qd8+ Kf7 52.Qd7+ Kf6 53.Qe6+ Kg7 54.Qe7+ Kg6 55.Qe6+ Kg7 56.Qe7+ Kg6 57.Qe6+ Kh5 58.Qh3+ Kg6 (Black is a whole queen up, but his king cannot escape the checks.) 59.Qe6+ 1/2-1/2

An Underpromotion Study

by lefthandeddragon, posted in game, Promotion, Uncategorized, Underpromotion

One of my main interests of study of chess is underpromotion, the reasons why such an underpromotion is not only possible, but of necessity.

The most common underpromotion is that to a knight, which makes up over 90% of all such underpromotions (the other two are rook and bishop, in that order of popularity).

If player has to underpromote to a knight the most probable explanation is that he is trying to prevent a fork, check, skewer, or pin by his opponent.

This has happened in Master chess. But only rarely. And even rarer is when it happens more than once during a game.

Here is a delightful example.

Zurakhov-Koblenc
USSR Ch., 1/2 Final
Tbilisi, 1956
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 dxe4 5.Nxe4 Be7 6.Bxf6 gxf6 7.Nf3 b6 8.Bc4 Bb7 9.Qe2 c6 10.O-O (10.O-O-O is ECO’s suggestion.) 10…Nd7 11.a4 f5?! 12.Ng3 Kf8 (Obviously Black doesn’t want to castle kingside. But the text is not any better.)


13.Bxe6! fxe6 14.Qxe6 Nf6 15.Nxf5 Bc8 16.Qe5 Bxf5 17.Qxf5 Qd5 18.Qf4 (>18.Ne5!) 18…Rg8 19.Rae1 Rg4 20.Qh6+ Kg8 21.Rxe7 Qxf3 22.g3 Rg6 23.Qh3 Qg4 24.Qxg4 Rxg4 25.c3 Re4 26.Rxe4 Nxe4 27.Re1 Re8 28.f3 Nd6 29.Rxe8+ Nxe8 30.Kf2 Nd6 31.b3 b5 32.Ke3 bxa4 33.bxa4 Nc4+ 34.Ke4 Kf7 35.d5 c5 36.f4 a5 37.f5 Nb6 38.d6 Ke8 39.f6 Kf7?! (Black missing 39…Nxa4!) 40.Ke5 Nd7+ 41.Kd5 Kxf6 42.g4 c4 43.Kc6 Ke6 44.g5 Nf8 45.h4 Nd7 46.h5 Ne5+ 47.Kc7 Kf5 48.Kb6 Ke6! (48…Kxg5? 49.Kxa5 and Black’s king and knight separated and White’s pawns will rapidly advance.) 49.Kxa5 Kxd6 50.Kb6 Nd7+ 51.Kb5 Kc7 52.Kxc4 Ne5+ 53.Kd5 Nf3 54.g6 hxg6 55.hxg6?! (After 55.h6! Ng5, the kingside is locked up and White can concentrate on the queenside with moves like 56.c4.) 55…Nh4 56.g7 Nf5

57.g8=N (This knight underpromotion is to prevent a fork that follows after 57.g8=Q? Ne7+, winning the queen and White is also down a pawn.) 57…Kb6 58.Kc4 Ne3+ 59.Kb3 Nd5 60.c4 Nc7 61.Nf6 Ne6 62.Ne4 Nc7 63.Nf2 Ne6 64.Nd3 Nd4+ 65.Kc3 Ne2+ 66.Kb4 Nd4 67.c5+ Ka6 68.Kc4 Nf5 69.Kd5 Kb7 70.Nb4 (70.c6+? Kc7 with the idea of Ne7+, equalizing.) 70…Ne3+ 71.Kd4 Nf5+ 72.Kc4 Ne3+ 73.Kb5 Kc7 74.a5 Nf5 75.Nd5+ Kb7 76.c6+ Ka7 77.c7 Kb7 (The White knight is keeping the Black’s knight out of play.) 78.a6+ Ka7


79.c8=N+ (Another knight promotion for the same reason. 79.c8=Q? Nd6+, and White is going to find winning the game an extremely hard thing to do. It should also be mentioned that 79.Kc5!! also wins. But the second knight promotion is so beautiful!) 79…Kb8 80.Kb6 (White now threatens 81.a7! , winning the game with his last pawn.) 1-0

A Brilliant End (almost)

by lefthandeddragon, posted in Blitz, Brilliant, mate, Promotion, Uncategorized, Underpromotion

It has been said that high ranking (say, Expert and above), resign too soon. This means that the high-ranking player (H-RP), finding that he is two pawns down (and sometimes even less than that), realizes that he cannot save his game against another H-RP and rather than waste two hours trying to save the game, or be the object of embarrassment or ridicule, he gently tips his king over, shakes the hand of his opponent, and gracefully resigns.

But there are times when the spectators want to see the rest of the game. They may have paid to see the tournament or match and they want the full value for their money.

Some want to root for the underdog, the one would not give up. After all, there is some romantic aspect about a fighter who refuses to give up.

Some spectators want to see blood spilled. They want the winner to effect the eventual mate by the most forceful, brutal way.

Finally, in case of a potentially brilliant game, many spectators they want to see the full display of sparking moves and crafty play from beginning to end. And maybe tell their grandchildren about it.

To be sure, these resignations, where spectators might reasonably want the game to continue, happen more than you might think. Let me give you an example.

~~~~~~~~~~~~~~~

Escalante-“crisbatiti”
Blitz game
chess.com, Sept. 9 2020
[C62]
1.e4 e5 2.Nf3 Nc6 3.Bb5 d6 4.d4

[Of course, White has other moves he can try.

I. Palacio (2172)-IM D. Charochkina (2356)
Titled Tuesday
chess.com, Aug. 4 2020
4.c3 Bd7 5.d4 a6 6.Ba4 b5 7.Bb3 Na5 8.Bc2 Qe7 9.O-O g6 10.dxe5 dxe5 11.Bg5 (>11.a4) 11…Nf6 12.Nbd2 Bg7 13.Qe2 O-O 14.Rad1 Rfe8 15.Rfe1 Rad8 16.Nf1 Nc4 17.b3 Nb6 18.Ne3 Bc6 19.Rxd8 Qxd8 20.Rd1 Qc8 21.Bxf6 Bxf6 22.h3 h5 23.Nd5 Bxd5 24.exd5 e4 25.Bxe4 Bxc3 26.Qc2 Bg7 27.Bd3 Qd7 28.Qc6 Rd8 29.Be4?? (29.Qb7!) 29…Qxc6 (And 30.dxc6 Rxd1+ 31.Kh2 f5.) 0-1.

But I prefer 4.d4, which is more simple and direct. It’s a personal preference.]

4…Bd7 5.O-O Nge7

[ECO give this game: Grohotov-Balashov, USSR, 1968, 5.O-O exd4 6.Nxd4 g6!? 7.Bxc6 bxc6 8.f4 c5 9.Ne2 f5 10.exf5 gxf5 11.Ng3 Qf6 12.Bd2 Bg7 13.Bc3 Qf7 14.Bxg7 Qxg7 15.Re1+ Ne7 16.Qe2 +/=]

6.d5 Nb8 7.Qe2 f5?! (This move creates a weakness after the bishops are traded.) 8.Bxd7+ Nxd7 9.c4 Nf6 10.Nc3 Rc8 11.Bg5 (11.Ng5! is quicker in disrupting Black’s position and plans.) 11…Ng6 12.exf5 Ne7 13.Bxf6 (13.Rae1 is another strong plan. But as mentioned before, I prefer direct and simple moves.) 13…gxf6 14.Nh4 (14.Nxe5!? should be analyzed more.) 14…h5 15.f4 Qd7 16.fxe5 dxe5 (16…fxe5? and now 17.Ne4! is much stronger.) 17.Ne4 Bg7 18.Ng6 (The immediate 18.Rae1 is stronger.) 18…Rh6 19.Nc5! (After causing chaos on the kingside, White attacks on the queenside and center.) 19…Qd6 20.Ne6 Bh8 21.Nxe7 (21.Qd2!) 21…Qxe7 22.c5! Kd7? (> 22…Bg7) 23.Rad1 (While the text move is good, 23.Qb5+! is decisive. But I wanted to push my d5-pawn.) 23…Qf7 24.Qb5+ c6 25.dxc6+ Ke8 26.cxb7+ Ke7


1-0 (Black resigned before White could play 27.bxc8=N#!!. This is a move I would be proud to show off. And not just to any future grandkids.)

Fun Opening Tasks

by lefthandeddragon, posted in Opening, Problems, Promotion, Smothered Mate, Uncategorized, Underpromotion

An opening task is simply a goal that must be met from the initial position of the pieces. All moves must be legal to reach the goal and complete the task.

 

2020_07_09_A

Tasks have been proposed such as the finding or creating a game in which have the most consecutive pawn moves by one player.

 

 

Years ago, in my early twenties, I challenged myself to find the quickest way to deliver a smothered mate. To my surprise the solution was quite easy to find. In fact, there were two solutions.

 

1.Nc3 g6 (alternately White can mate by 1… e6 2.d4 c6 3.Ne4 Ne7 4.Nd6#) 2.Ne4 e6 3.d4 Ne7 4.Nf6mate 1-0

 

 

Then I wanted to find the quickest way to win a game by a promotion. Better, if I can find an underpromotion. So, in these pre-Internet days, I had to find the answer in a chess book.

 

I searched longer than my previous quest, but I did find such a game. If remember correctly, it was from a Chernev book.

 

Wiede-Goetz
Strasbourg, 1880
1.e4 e5 2.f4 exf4 3.b3 Qh4+ 4.g3? fxg3 5.h3? (Black now has a forced mate in three.) 5…g2+ 6.Ke2 Qxe4+ 7.Kf2

2020_07_09_B

7…gxh1=Nmate! 0-1

 

The time between these two tasks, and the third one presented below, was about 30 years. This third task was proposed by a member of chess.com who asked, “What’s the minimum number of moves to force a checkmate using 3 bishops, assuming the position is farthest from checkmate?”

 

This is what I came up with.

 

Analysis
[Escalante, 2020]
1.e4 e5 2.d4 Ba3 3.dxe5 Bxb2 4.Bxb2 d5 5.Bc4 d4 6.Ba3 Kd7 7.e6+ Ke8 8.exf7+ Kd7 9.fxg8=B Nc6 10.Bce6+ Ke8 11.Bgf7mate 1-0

2020_07_09_C

 

 

Of course, the King of such opening tasks is Sam Loyd (January 30, 1841 – April 10, 1911), who not only solved some very unusual opening tasks, but created literally thousands of chess problems, math puzzles, logic problems, and folding paper tricks.

 

SamLoyd400x400_6

 

 

One of his most famous tasks was to find the least number of moves in which a stalemate position can occur.

 

The solution may not be known to most players, but two enterprising young Swedish players decided to use it in one of their games. Apparently, they didn’t know or care what the organizers thought about their rather short game. Probably the latter.
Johan Upmark-Robin Johansson
Swedish Jr. Ch.
Borlange, 1995
[ECO: A10]
1.c4 h5 2.h4 a5 3.Qa4 Ra6 4.Qxa5 Rah6 5.Qxc7 f6 6.Qxd7+ Kf7 7.Qxb7 Qd3 8.Qxb8 Qh7 9.Qxc8 Kg6 10.Qe6 1/2-1/2
2020_07_09_D

Pawn Pusher!

by lefthandeddragon, posted in Pawns, Promotion, Uncategorized, Wing Gambit

Sometimes beginners are referred, somewhat in jest, as being mere “pawn-pushers”. Try telling that to these Grandmasters.

 

Typically, most pawns are pushed towards the end of the game with the goal of eventually promoting. But pawns don’t need to promote and pawn pushing can happen at any stage of the game. In fact, it is possible to win a game with pawn moves only.

 
R. Kujoth – Fashing-Bauer
Milwaukee, 1950
1.e4 c5 2.b4 cxb4 3.a3 Nc6 4.axb4 Nf6 5.b5 Nb8

[The (in?)famous game, Frank Marshall-Viacheslav Ragosin, New York, 1940, continued instead with 5…Nd4 6.c3 Ne6 7.e5 Nd5 8.c4 Ndf4 9.g3 Ng6 10.f4 Ngxf4 11.gxf4 Nxf4 12.d4 Ng6 13.h4 e6 14.h5 Bb4+ (And now, after 14 moves, Marshall had to finally move a piece.) 15.Bd2 Bxd2+ 16.Nxd2 Ne7 17.Ne4 Nf5 18.h6 g6 19.Nf6+ Kf8 20.Nf3 d6 21.Ng5 dxe5 22.dxe5 Qxd1+ 23.Rxd1 Ke7 24.Rh3 b6 25.Bg2 Rb8 26.Ngxh7 1-0.]

 

6.e5 Qc7 7.d4 Nd5 8.c4 Nb6 9.c5 Nd5 10.b6!
2020_04_01_A

1-0

 

 

John Hurt (1831)-Morris Busby
Bluff City Open, February 17, 1979
1.e4 c5 2.b4 cxb4 3.a3 Nc6 4.axb4 Nf6 5.b5 Nd4 6.c3 Ne6 7.e5 Ne4 8.d4 d5 9.f3 N4g5 10.h4 1-0

 

 
Pawn pushing can be used in the middle game. To good effect.

 

 
GM Vassily Ivanchuk (2740)-GM Veselin Topalov (2670)
Investbanka
Belgrade, 1995
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 Nc6 8.Qd2 O-O 9.Bc4 Bd7 10.h4 Rc8 11.Bb3 h5 12.O-O-O Ne5 (The Soltis Variation of the Dragon.) 13.Bg5 Rc5 14.g4 hxg4 15.f4 Nc4 16.Qe2 Qc8

[This appear to be Black’s best move. Sarunas Sulskis (2505)-Dr. Evarth Kahn (2350), Budapest 1995 continued with 16…b5!? 17.h5 Nxh5 18.f5 a5 19.Qxg4 a4 20.Bxc4 Rxc4 21.Rxh5 gxh5 22.Qxh5 Rxd4 23.Rh1 f6 24.Qh7+ Kf7 25.Bh6 Bxf5 26.Qxg7+ Ke6 27.exf5+ 1-0.]

17.Bxf6 Bxf6 18.Nd5 Rxd5!! (This move certainly looks like it gives the initiative to Black. Can it be sustained? Or is it an illusion? White several plans to try to counter Black’s threats. But first, the most obvious move.) 19.exd5 b5 20.h5 (Now here is where it starts to get complicated.) 20…g5!? (It’s obvious Black intends to push his kingside pawns. Doing so will put a cramp on both White’s attack on the kingside and more importantly, the coordination of his pieces.) 21.fxg5 Bxg5+! (Black will use the extra tempo to push another pawn.) 22.Kb1 f5 23.Rd3 (It’s been recommended that 23.h6, pushing White’s pawns to counter Black’s advancing pawns, is the better move.) 23…f4 24.Bxc4 Qxc4 0-1

2020_04_01_B

[Ivanchuk was criticized for resigning here. It’s not an easy position to hold. Some sample lines: (1) 25.Qd2 Kh7 26.Qg2 Kh8 27.b3 Qc8! Black’s king is hiding and his queen can reposition herself., (2) 25.Qg2 Kh8 26.Re1 b4 and Black’s queenside pawns start advancing, (3) 25.Rc3?! Qxd4 26.Rc7 Bf5 (a “fantasy” position for Black). In addition to Black’s dangerous kingside pawns he now has both bishops aiming for White’s castled position, (4) 25.Ne6?! fails to 25….f3! 26.Qd1 Bxe6. Maybe Ivanchuk saw all of this.]

 

Obviously, one has to be careful pushing pawns. When a pawn is advances it leaves holes where the enemy pieces can hold or attack.

 

The following games illustrates this point. And features some serious pawn pushing.

 

GM Boris Spassky-GM Bobby Fischer
World Ch., Game #13
Reykjavik, July 11 1972
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 g6 5.Bc4 Nb6 6.Bb3 Bg7 7.Nbd2 (ECO gives this move a “?!”, suggesting 8.Ng5.) 7…O-O 8.h3!? (8.O-O!?) 8…a5! (To create space and threaten …a4.) 9.a4 dxe5 10.dxe5 Na6 11.O-O Nc5 (-/+ ECO) 12.Qe2 Qe8 13.Ne4 Nbxa4 14.Bxa4 Nxa4 15.Re1 Nb6 16.Bd2 a4 17.Bg5 h6 18.Bh4 Bf5 19.g4 Be6 20.Nd4 Bc4 21.Qd2 Qd7 22.Rad1 Rfe8 23.f4 Bd5 24.Nc5 Qc8 25.Qc3 e6 26.Kh2 Nd7 27.Nd3? c5! 28.Nb5 Qc6 29.Nd6 Qxd6 30.exd6 Bxc3 31.bxc3 f6 32.g5 hxg5 33.fxg5 f5 34.Bg3 Kf7 35.Ne5+ Nxe5 36.Bxe5 b5 37.Rf1 Rh8 38.Bf6 a3 39.Rf4 a2 40.c4 Bxc4 41.d7 Bd5 42.Kg3 Ra3+ 43.c3 Rha8 44.Rh4 e5 45.Rh7+ Ke6 46.Re7+ Kd6 47.Rxe5 Rxc3+ 48.Kf2 Rc2+ 49.Ke1 Kxd7 50.Rexd5+ Kc6 51.Rd6+ Kb7 52.Rd7+ Ka6 53.R7d2 Rxd2 54.Kxd2 b4 55.h4 Kb5 56.h5 c4 57.Ra1 gxh5 58.g6 h4 59.g7 h3 60.Be7 Rg8 61.Bf8! (Locking in the rook.)

2020_04_01_C

61…h2 62.Kc2 Kc6 63.Rd1 b3+ 64.Kc3 h1=Q 65.Rxh1 Kd5 66.Kb2 f4 67.Rd1+ Ke4 68.Rc1 Kd3 69.Rd1+ [Gligorić, writing in Informant 14, (Game #165) give this move a ??, claiming that 69.Rc3+! Kd4 70.Rf3 c3+ 71.Ka1 c2 72.Rxf4+ Kc3 73.Rf3+ Kd2 74.Ba3! is equal. He appears to be correct.] 69…Ke2 70.Rc1 f3 71.Bc5 Rxg7 72.Rxc4 Rd7 73.Re4+ Kf1 74.Bd4 f2 0-1

AN INTRODUCTION TO THE UNDERPROMOTION, Part 1

by lefthandeddragon, posted in chess, Promotion, Uncategorized, Underpromotion, winning

There seems to be some confusion about underpromotions. Some players believe the rule for underpromotion goes something like this: “a pawn, upon reaching the eighth rank can be promoted to any piece”. This definition can produce some rather interesting problems. For example, it is White to move and mate in the following two problems.

 

Zuckertort?
White to Mate in 1

2019_09_04_A

 

 

Unknown
White to Mate in 1

2019_09_04_B

 

White’s first move in both problems is, of course, an underpromotion. Just not to his own color. In the first diagram, White checkmates with 1.g8=black Knight, while in the second, he mates with 1.bxa8=Black Rook.

 

The exact rule for underpromotion is that a player may promote to a Queen, Rook, Bishop or Knight of his own color.

 

 

There is at least one more misunderstood area of underpromotion. Some players insist that you may not legally promote to a piece that did not come with the original set. That means you could not promote a pawn if you still had your original seven pieces (Not counting the King; if you need to promote to a King it probably means that you’ve already lost the game). And you certainly could not have three Knights on the board at the same time. The pawn then must remain immobile after reaching the 8th rank.

 

However, the rule clearly states that you may have three (or more!) Knights. You can promote to a dark colored Bishop, even if your original one is still on the board. You may also have as many as nine Queens at the same time (eight promoted pawns plus the original Queen). In fact, the biggest obstacle to having nine Queens at the same time may be your opponent, who may not want to defend against the armada!

 

This may seem simple enough, but there is still confusion out there in the tournament arena.

 

The following is a game played by the author;

 

Ko-Escalante
Southern California Open, 1996

2019_09_04_C

 

47.Nd3+ Kb1 48.Ke1 [48.Nc1? and Black can either play 48…Nf3+ or 48…Nf6 (with the idea of Ne4), winning in either case. Now back to the underpromotion theme. If Black promotes to a Queen, White would be forced to take the Queen with 49.Nxc1 Kxc1. The two Knights versus none are overwhelming, but if Black underpromotes then White could conceivably ignore the new piece. In any case, Black loses nothing by underpromoting.] 48…c1=N [Now White went off to the Tournament Director (TD), complaining that Black could not have three Knights on the board at the same time. And I should promote to a Queen. What did he expect to win by that argument!? The TD told him my move was legal and sent him back to the game. Where he promptly erred.] 49.Ne5? (Now three Knights versus one are better odds for White’s survival than two Knights versus none. But when White starts moving his Knight away, it becomes three knights versus none. And the White King is soon overwhelmed.) 49…Kc2 50.Kf1 Nd3 51.Nf7 Ne3+ 52.Kg1 Nf3+

 

2019_09_04_D

0-1 And mate next move.

 

           

 

A Four Queen Opening.

by lefthandeddragon, posted in games, Opening, Promotion, Queen, Slav, Uncategorized

Many players dream of playing with four queens on the board. They admire the complications and the overall tactical possibilities.

 

Most of the know that endgames produce the most four-queen games. And yet, it is still not that common and the tactically-gifted usually don’t have their dreams transformed into reality.

 
But is there an opening that will let the players have the four queens.

 

 

The opening is from a Semi-Slav and the Encyclopedia of Chess Openings (ECO) classifies it as D47.

 

The opening moves to this multi-queen game are 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 (In case you are interested, these moves define the Semi-Slav), 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5. Now White’s bishop is under attack, so he moves to e2. Now after 8.Be2 a6 9.e4 b4 10.e5! bxc3 11.exf6 cxb2 12.fxg7 bxa1=Q 13.gxh8=Q, we have four queens, with two of them on their original squares and the other two are far off on corner squares.

 

Here are all the moves and a diagram to help you.

 
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Be2 a6 9.e4 b4 10.e5! bxc3 11.exf6 cxb2 12.fxg7 bxa1=Q 13.gxh8=Q.

 

2019_06_05_A

 

Now let’s get to some games and analysis.

 

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 
Black best response, after 13.gxh8=Q is to activate his second queen with 13…Qa5+. Anything else puts his game into jeopardy.

 

J. Kjeldsen-T. Christensen
Arhus, 1995
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Be2 a6 9.e4 b4 10.e5 bxc3 11.exf6 cxb2 12.fxg7 bxa1=Q 13.gxh8=Q c5?! 14.O-O Bb7 15.Qxh7 Qxa2 16.Ng5 Qf6 17.Nxf7 Qg7 18.Qxg7 1-0

 

CM Asmund Hammerstad (2205)-Pavol Sedlacek (2233)
European Club Cup
Rogaska Slatina, Slovenia, Sept. 28 2011
1.d4 Nf6 2.Nf3 d5 3.c4 c6 4.Nc3 e6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Be2 a6 9.e4 b4 10.e5 bxc3 11.exf6 cxb2 12.fxg7 bxa1=Q 13.gxh8=Q Qxa2 (A little more active than 13…c5, but not by much.) 14.O-O Qf6 15.Qxh7 Qg7 16.Qhc2 Qd5 17.Ng5 Bb7 18.Bf3 Qb5 19.Bh5 O-O-O 20.Be2 Qa5 21.Bd2 Qa3 22.Bf3 Nb8 23.Be3 Be7 24.Ne4 f5 25.Nd2 Qb4 26.Qe2 Qb5 27.Nc4 a5 28.Rb1 Bb4 29.Nd6+ Rxd6 30.Qxb5 Qd7 31.Qe5 Qe8 32.Rxb4 1-0

 

After Black’s 13…Qa5+, White must block the check and he has two main ways to do so. One is 14.Bd2, the other 14.Nd2. The move 14.Bd2 would seem to be the best, but only superficially. 14.Nd2 allows for more freedom for White’s pieces. That’s why White wants to enter these complications – to use his tactical abilities.

 

 

Here are a few games with 14.Bd2.

 

Benko-Pytel
Hastings, 1973
[ECO]
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Be2 a6 9.e4 b4 10.e5 bxc3 11.exf6 cxb2 12.fxg7 bxa1=Q? 13.gxh8=Q Qa5+ 14.Bd2 Qxd1+ 15.Bxd1 Qf5 (15…Qb5 16.Qxh7 +/-) 16.O-O Bb7 17.d5 Qxd5 18.Qxh7 c5 19.Ba4 O-O-O 20.Bg5 Ne5 21.Ne1 c4 22.Bxd8 Qxd8 23.Qh8 f6 24.Qg8 Qd6 25.Nc2 Kc7 26.Ne3 Be7 27.Rd1 Qb6 28.Qe8 Bc5 29.Qd8mate 1-0

 

Lauber (2380)-Mosquera
World U20 Ch.
Medellin, 1996
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Be2 a6 9.e4 b4 10.e5 bxc3 11.exf6 cxb2 12.fxg7 bxa1=Q 13.gxh8=Q Qa5+ 14.Bd2 Qxd1+ 15.Bxd1 Qxa2 16.O-O c5 17.dxc5 Bb7 18.Bg5 h6 19.Bxh6 O-O-O 20.c6 Bxc6 21.Bxf8 Qa5 22.Be2 Rxf8 23.Qb2 Bb5 24.Rc1+ Kd8 25.Ne5 Nxe5 26.Qxe5 Qb4 27.Qc7+ Ke8 28.Qb7 Qd6 29.Rc8+ Qd8 30.Rxd8+ Kxd8 31.Bxb5 axb5 32.Qxb5 1-0

 

Fletcher Baragar (2305)-Daniel Fernandez (2057)
Financial Concept Open
North Bay, Canada, Aug. 7 1999
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Be2 a6 9.e4 b4 10.e5 bxc3 11.exf6 cxb2 12.fxg7 bxa1=Q 13.gxh8=Q Qa5+ 14.Bd2 Q5xa2 15.O-O Qxd1 16.Rxd1 h6 17.Ne5 Nxe5 18.dxe5 Bd7 19.Qf6 Be7 20.Qh8+ Bf8 21.Qf6 Be7 22.Qxh6 O-O-O 23.Qe3 c5 24.Qf3 Kb8 25.Be3 Bb5 26.Rxd8+ Bxd8 27.Bxb5 axb5 28.g3 b4 29.Qc6 b3 30.Bxc5 b2 31.Bd6+ Ka7 32.Bc5+ Kb8 1/2-1/2

 

Kamil Klim (2108)-Krzysztof Bulski (2396)
Lasker Memorial
Barlinek, June 2 2007
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 e6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Be2 a6 9.e4 b4 10.e5 bxc3 11.exf6 cxb2 12.fxg7 bxa1=Q 13.gxh8=Q Qa5+ 14.Bd2 Qxd1+ 15.Bxd1 Qf5 16.O-O Bb7 17.d5 Qxd5 18.Qxh7 c5 19.Ba5 Bc6 20.Nh4 Qe4 21.Qxe4 Bxe4 22.Re1 Bd3 23.Nf3 Bg7 24.Ng5 Bf6 25.Ne4 Bd4 26.Bc7 Nf6 27.Ba4+ Bb5 28.Bc2 Kd7 29.Bb6 Nxe4 30.Bxe4 Bc6 31.Rd1 Bd5 32.Bc2 Rb8 33.Ba4+ Kd6 34.Ba5 Rb2 35.Rd2 Rb1+ 36.Rd1 Bxa2 37.h4 Rxd1+ 38.Bxd1 c4 0-1

 
Now for the stronger, and more fluid, 14.Nd2.

 

Krogius-Kamyshov
USSR, 1949
[ECO]
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Be2 a6 9.e4 b4 10.e5 bxc3 11.exf6 cxb2 12.fxg7 bxa1=Q? 13.gxh8=Q Qa5+ 14.Nd2 Qf5 15.O-O Bb7 16.Qb3 Nc5 17.Ba3 Nxb3 18.Qxf8+ Kd7 19.Qe7+ Kc8 20.Nxb3 +- Qxf1+ 21.Bxf1 Qd5 22.Bd6 1-0

 

Krogius-Shvedchikov
Calimanesti, 1993
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Be2 a6 9.e4 b4 10.e5 bxc3 11.exf6 cxb2 12.fxg7 bxa1=Q 13.gxh8=Q Qa5+ 14.Nd2 Bb7 15.O-O Q1xa2 16.Nc4 Qd5 17.Bh6 O-O-O 18.Bxf8 c5 19.Nd6+ Qxd6 20.Bxd6 Rxh8 21.dxc5 Qd5 22.Qxd5 exd5 23.Rc1 1-0

 

De Guzman (2407)-Bhat (2410)
Michael Franett Memorial
San Francisco, 2005
1.d4 d5 2.c4 e6 3.Nf3 c6 4.e3 Nf6 5.Nc3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Be2 Bb7 9.e4 b4 10.e5 bxc3 11.exf6 cxb2 12.fxg7 bxa1=Q 13.gxh8=Q Qa5+ 14.Nd2 Qf5 15.O-O O-O-O 16.Qb3 Nc5 17.Qb4 Nd7 18.Qb3 Nc5 19.Qb4 Be7 20.Qg7 Bf8 21.Qh8 Be7 1/2-1/2

 

Emil Klemanic (2257)-Peter Palecek (2254)
Slovakia Team Ch.
Košice, Jan. 16 2011
1.d4 d5 2.Nf3 Nf6 3.c4 c6 4.e3 e6 5.Nc3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Be2 a6 9.e4 b4 10.e5 bxc3 11.exf6 cxb2 12.fxg7 bxa1=Q 13.gxh8=Q Qa5+ 14.Nd2 c5 15.O-O Qxd4 16.Qxh7 Qxa2 17.Bc4 Nf6 18.Qh8 Qa5 19.Qf3 Nd5 20.Qhh5 Qc7 21.Re1 Nf4 22.Qh7 Bb7 23.Ne4 Qa5 24.Rd1 O-O-O 25.Rxd4 Qe1+ 26.Bf1 Rxd4 27.Qxf4 Bxe4 28.Qhxf7 Bd6 29.Q4f6 Bc7 30.Q6xe6+ Kb7 31.Qxa6+ Kb8 32.Qe8+ Rd8 33.Qeb5+ 1-0

 
If 14.Nd2 Q5xa2?!, then White gets an advantage after the simple 15.O-O.

 

Shumiakina-Mihai
Timisoara, 1994
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Be2 a6 9.e4 b4 10.e5 bxc3 11.exf6 cxb2 12.fxg7 bxa1=Q 13.gxh8=Q Qa5+ 14.Nd2 Q5xa2 15.O-O Bb7 16.Bc4 Qa4 17.Nb3 Qc3 18.Bxe6 fxe6 19.Bg5 Nf6 20.Qxf6 1-0

 

Fernando Peralta (2315)-Carlos Gonzalez
Villa Ballester Open, 1996
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Be2 a6 9.e4 b4 10.e5 bxc3 11.exf6 cxb2 12.fxg7 bxa1=Q 13.gxh8=Q Qa5+ 14.Nd2 Q5xa2 15.O-O Qa4 16.Ne4 Qb4 17.Bd2 Qaxd4 18.Nf6+ Qxf6 19.Qxf6 Nxf6 20.Bxb4 Bxb4 21.Qa4 1-0

 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 
There is a sister variation with 8…Bb7 instead of 8…a6. And although there are similarities between the two variations, Black is more active and scores better in this variation.

 
Again, here are the opening moves and a diagram to help.

 
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 8.Be2 Bb7 9.e4 b4 10.e5! bxc3 11.exf6 cxb2 12.fxg7 bxa1=Q 13.gxh8=Q.
2019_06_05_B

 
And again, Black does best to activate his second queen with 13…Qa5+. Two games in which he does not and loses the game.

 

Z. Polgar-V. Dimitrov
Bulgaria, 1984
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Be2 Bb7 9.e4 b4 10.e5 bxc3 11.exf6 cxb2 12.fxg7 bxa1=Q 13.gxh8=Q Qb1 14.O-O (White’s best.) 14…Qf6 15.Qxf6 Nxf6 16.Ne5 Qxa2 17.Bc4 Qa5 18.Qf3 Be7 19.Bg5 Qd8 20.Bxe6! fxe6 21.Bxf6 +- Qxd4 22.Qh5+ 1-0

 

Rassmussen-Domosud, 1984
[I am not sure who annotated this game. If the reader knows, please email me with the information. Thanks!]
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Be2 Bb7 9.e4 b4 10.e5 bxc3 11.exf6 cxb2 12.fxg7 bxa1=Q 13.gxh8=Q Qb1 14.O-O Qf6 15.Qxf6 Nxf6 16.Ne5 Qxa2 17.Bc4 (17.Bh5 Qd5 18.Bxf7+ Kd8 19.Bh5) 17…Qa5 (Qb1) 18.Qf3 Be7 19.Bg5 [19.Nxc6 Qb6 20.d5 exd5 21.Nxe7 dxc4 (21…Kxe7 22.Re1+ Kd7 23.Qf5+ Kd8 24.Bg5)] 19…Qd8 20.Bxe6 [20.Nxc6 Qb6 21.d5 Bxc6 (21…Nxd5 22.Bxd5 <22.Nxe7 Nxe7 23.Qf6 Ng6> 22…Bxg5 23.Ne5) 22.dxc6 Nd5 23.Bxd5 Bxg5] 20…fxe6 21.Bxf6 Qxd4 (21…Qc8 22.Rb1 Bxf6 23.Qxf6 Qc7 24.Qh8+ Ke7 25.Qxh7+ Kd6 26.Nc4+ Kd5 27.Qxc7 Kxc4 28.Qe5 Kc3 29.Qc5+ Kd2 30.Rc1 Kd3 31.Rd1+ Ke4 32.Qe5#) 22.Qh5+ (22…Kd8 23.Nf7+ Kc8 24.Bxd4) 1-0

 
And here is the 14.Bd2 block. Not as good as 14.Nd2, but you probably already knew that already.

 

Chekover-Suetin
Leningrad, 1951
[ECO]
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Be2 Bb7 9.e4 b4 10.e5 bxc3 11.exf6 cxb2 12.fxg7 bxa1=Q 13.gxh8=Q Qa5+ 14.Bd2 Qxd1+ 15.Bxd1 Qf5 16.O-O O-O-O 17.Qg8 Be7 18.Qg7 Qg6 19.Qxg6 hxg6=

 

Pliester-Dreev
New York Open, 1989
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Be2 Bb7 9.e4 b4 10.e5 bxc3 11.exf6 cxb2 12.fxg7 bxa1=Q 13.gxh8=Q Qa5+ 14.Bd2 Qxd1+ 15.Bxd1 Qf5 16.O-O O-O-O 17.d5 Bd6 18.Qd4 c5 19.Qa4 Qxd5 20.Be2 Rg8 21.Rd1 Qe4 22.Qxe4 Bxe4 23.Ng5 Bd5 24.f3 f5 25.Nxh7 Be7 26.Ba6+ Kc7 27.Bf4+ Kd8 28.h4 Bxh4 29.g3 Bxg3 30.Bg5+ Kc7 31.Kg2 Bf4 0-1

 
After 13.gxh8=Q Qa5+ 14.Nd2, Black has three reasonable tries. Here are some minor ones just to lay some ground work.

 

Barshauskas-Kholmov
Latvian Ch., 1955
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Be2 Bb7 9.e4 b4 10.e5 bxc3 11.exf6 cxb2 12.fxg7 bxa1=Q 13.gxh8=Q Qa5+ 14.Nd2 Q5xa2 15.O-O Ba6 (unclear – ECO) 16.Bxa6 Qxa6 17.Nb3 Qb1 18.Nc5 Qab5 19.Bh6 Qxd1 20.Rxd1 O-O-O 21.Nxd7 Bxh6 22.Qxh7 Qh5 23.Rb1 Kxd7 24.Rb7+ Kc8 25.Qb1 Bf4 26.g3 Rxd4 (with the idea of Rd1+) 0-1

 

Blackstock-Crouch
London, 1980
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Be2 Bb7 9.e4 b4 10.e5 bxc3 11.exf6 cxb2 12.fxg7 bxa1=Q 13.gxh8=Q Qa5+ 14.Nd2 Qd5 15.O-O Qaxd4 16.Qxh7 Nf6 17.Qb1 Qb6 18.Bb2 Be7 19.Nc4 Qc7 20.Be5 Qcd7 21.Bxf6 Bxf6 22.Bf3 Qd4 23.Qa4 (+- ECO ; 23…Qf4!?)

 

Hansen-Muir
Aarus, 1990
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Be2 Bb7 9.e4 b4 10.e5 bxc3 11.exf6 cxb2 12.fxg7 bxa1=Q 13.gxh8=Q Qa5+ 14.Nd2 Ba6 15.O-O Bxe2 16.Qxe2 Q5xa2 17.Qxh7 Qxd4 18.Qeh5 O-O-O 19.Q5xf7 Bc5 20.Qe4 Rf8 21.Qxd4 Bxd4 22.Qh7 Qd5 23.Nf3 Rxf3 24.gxf3 Ne5 25.Qg8+ Kb7 26.Qg7+ Kb6 27.Qg2 Nxf3+ 28.Kh1 a5 29.Be3 c5 30.Rb1+ Kc6 31.Rc1 a4 32.Bxd4 Nxd4 33.Qxd5+ exd5 34.h4 c4 35.h5 Nf5 36.Kg2 Kc5 37.Kf3 d4 38.Kf4 Nd6 39.h6 c3 40.h7 Nf7 41.Ra1 Kc4 0-1

 

Sadler-Neverov
Hastings, 1991
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Be2 Bb7 9.e4 b4 10.e5 bxc3 11.exf6 cxb2 12.fxg7 bxa1=Q 13.gxh8=Q Qa5+ 14.Nd2 O-O-O 15.O-O Qf5 16.Qb3 Nc5 17.Qb4 Nd7 18.Qb3 1-0

 

Now for the main lines.

 

Black’s main choices here;

 

(1) 13.gxh8=Q Qa5+ 14.Nd2 Q5c3

 

(2) 13.gxh8=Q Qa5+ 14.Nd2 c5 15.O-O Qxd4

 

The next two originate from 14.Nd2 Qf5, one with 15.O-O O-O-O 16.Qb3, the other without all these moves.

 

(3) 13.gxh8=Q Qa5+ 14.Nd2 Qf5

 

(4) 13.gxh8=Q Qa5+ 14.Nd2 Qf5 15.O-O O-O-O 16.Qb3

 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 
(1) 13.gxh8=Q Qa5+ 14.Nd2 Q5c3

 

Lazarev-Goldstein
USSR Ch., 1962
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Be2 Bb7 9.e4 b4 10.e5 bxc3 11.exf6 cxb2 12.fxg7 bxa1=Q 13.gxh8=Q Qa5+ 14.Nd2 Q5c3 15.O-O Qxd4 16.Qxh7 Qxa2 17.Bc4 Qa5 18.Bxe6 O-O-O 19.Qxf7 Qg7 20.Qxg7 Bxg7 21.Nc4 Qc7 22.Qg4 Be5 23.Bxd7+ Rxd7 24.Qg8+ Rd8 25.Qe6+ 1-0

 

Bikov-Filipenko
Moscow, 1983
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Be2 Bb7 9.e4 b4 10.e5 bxc3 11.exf6 cxb2 12.fxg7 bxa1=Q 13.gxh8=Q Qa5+ 14.Nd2 Q5c3 15.Bc2 Ba6 16.h4 Qxd4 17.Qxd4 Qxd4 18.Rh3 O-O-O 19.Qf3 Ne5 20.Qc3 Bb4 21.Qxd4 Rxd4 22.h5 Nd3+ 23.Bxd3 Bxd3 24.h6 c5 25.a3 Ba5 26.Rh5 Rd5 27.Rxd5 exd5 28.Kd1 Bg6 29.Nb3 Bb6 30.a4 c4 31.a5 Bxf2 32.Ke2 Bg1 33.Kf1 Bh2 34.Nd4 Kd7 35.Bb2 Bf4 36.Bc3 a6 37.Ke2 Bxh6 0-1

 
(2) 13.gxh8=Q Qa5+ 14.Nd2 c5 15.O-O Qxd4

 

Lukov-Conquest
Tbilisi, 1988
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Be2 Bb7 9.e4 b4 10.e5 bxc3 11.exf6 cxb2 12.fxg7 bxa1=Q 13.gxh8=Q Qa5+14.Nd2 c5 15.O-O Qxd4 16.Qxh7 Qc7 17.Bf3 Nf6 18.Qh3 Nd5 19.Ne4 Qxd1 20.Rxd1 O-O-O 21.Bg5 Be7 22.Bxe7 Qxe7 23.Qh6 Kb8 24.Rc1 Rc8 25.Qg7 e5 26.Bg4 f5 27.Qxe7 Nxe7 28.Nd6 fxg4 29.Nxc8 Bxc8 30.Rxc5 Ng6 31.f3 gxf3 32.gxf3 Be6 33.a3 Kb7 34.Kf2 Kb6 35.Rc3 Bf5 36.Kg3 e4 37.Re3 exf3 38.Rxf3 Ne7 39.Kf4 Bc8 40.Kg5 Kc5 41.h4 Bb7 42.Rf7 Kd6 43.Kf6 Nd5+ 44.Kg7 Nc7 45.h5 Be4 46.h6 a5 47.Rf1 Ke5 48.Rc1 Ne6+ 49.Kg8 Kd4 50.Rg1 Nc5 51.Kf7 Bc2 52.Kf6 Nd7+ 53.Kg7 Nc5 54.Kf7 Bh7 55.Ke7 Bf5 56.Rg5 Bc2 57.Rh5 Bh7 58.Kd6 Nb3 59.Kc6 Kc3 60.Kb5 Bd3+ 61.Ka4 1-0

 

Sadler-Payen
Hastings, 1990
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Be2 Bb7 9.e4 b4 10.e5 bxc3 11.exf6 cxb2 12.fxg7 bxa1=Q 13.gxh8=Q Qa5+14.Nd2 c5 15.O-O Qxd4 16.Qxh7 Qxa2 17.Bc4 Qaa1 18.Bxe6 O-O-O 19.Qxf7 Bd6 20.Nc4 Bc7 21.Bd5 Ba6 22.Qxd4 Qxd4 23.Bb2 Qd3 24.Qe6 Bb5 25.Re1 Kb8 26.Ne3 Qd2 27.Rb1 Nb6 28.Be5 Qd3 29.Be4 Qe2 30.Bxc7+ Kxc7 31.Qe5+ Kc8 1-0

 

Chatalbashev-Sveshnikov
USSR, 1991
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Be2 Bb7 9.e4 b4 10.e5 bxc3 11.exf6 cxb2 12.fxg7 bxa1=Q 13.gxh8=Q Qa5+14.Nd2 c5 15.O-O Qxd4 16.Nb3 Qxh8 (16…Qxd1 17.Rxd1 Qa4 18.Qxh7) 17.Nxa5 Bd5 18.Qc2 (18.Bf3!? Qd4 19.Qxd4 cxd4 20.Bxd5 exd5 21.Re1+ Kd8 22.Nc6+) 18…Qe5 19.Bd3 Bg7 20.Nc4 Qc3 21.Qe2 Ne5 22.Nxe5 Qxe5 23.Be3 Rc8 24.Ba6 Rc7 25.Qb5+ Ke7 26.Bxc5+ Kf6 27.Qb4 Qg5 28.f3 Kg6 29.Bd3+ f5 30.a3 Be5 31.Bd4 a5 32.Qb6 Rb7 33.Qc5 Qe7 34.Bf2 Qxc5 35.Bxc5 Rc7 36.Rc1 Rxc5 0-1

 
(3) 13.gxh8=Q Qa5+ 14.Nd2 Qf5

 

 

Pliester-Nikolic
Purmerend, 1993
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Be2 Bb7 9.e4 b4 10.e5 bxc3 11.exf6 cxb2 12.fxg7 bxa1=Q 13.gxh8=Q Qa5+ 14.Nd2 Qf5 15.Nc4 O-O-O 16.O-O Qxa2 17.Bd3 Qd5 18.Ne3 Qg5 19.Qxh7 Qg7 20.Qdh5 Qxh7 21.Qxh7 e5 22.Bc4 Qa5 23.Qxf7 exd4 24.Nf5 Bc5 25.Bg5 Rf8 26.Qe6 Qc7 27.g3 Qe5 28.Qxe5 Nxe5 29.Be6+ Nd7 30.Rb1 Ba6 31.Rc1 Re8 32.Ng7 Rxe6 33.Nxe6 Bb6 34.h4 Kb7 35.h5 c5 36.Be7 d3 37.h6 c4 38.h7 d2 39.Ra1 c3 40.h8=Q c2 41.Qh1+ Kc8 42.Qc6+ 1-0

 

Carnic-Vlatkovic, 1995
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Be2 Bb7 9.e4 b4 10.e5 bxc3 11.exf6 cxb2 12.fxg7 bxa1=Q 13.gxh8=Q Qa5+ 14.Nd2 Qf5 15.O-O O-O-O 16.Nc4 Be7 17.Qg7 Qxa2 18.Bd3 Qf6 19.Qg3 Nb6 20.Nxb6+ axb6 21.Be3 Qd5 22.Qc2 Bd6 23.Qh3 c5 24.f3 Bf4 25.Bf2 Qd6 26.Rd1 Kb8 27.dxc5 bxc5 28.Bxc5 Qc7 29.Qh5 Rd5 30.Qxd5 exd5 31.g3 0-1

 

Shumiakina-Zakurdjaeva
Moscow, 1999
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Be2 Bb7 9.e4 b4 10.e5 bxc3 11.exf6 cxb2 12.fxg7 bxa1=Q 13.gxh8=Q Qa5+ 14.Nd2 Qf5 15.O-O O-O-O 16.Nc4 Qxa2 17.Bd3 Qf6 18.Qxh7 Nb6 19.Nxb6+ axb6 20.Be3 Bd6 21.Qdh5 Rd7 22.Be4 Qd8 23.Q7h6 Qa4 24.Bf3 Kc7 25.Qh8 Qxh8 26.Qxh8 Qa5 27.Qf6 Qa8 28.Rb1 b5 29.Rc1 Qd8 30.Qh6 Qf8 31.Qh5 f5 32.Bd2 b4 33.Qg6 Qh8 34.g3 Qxd4 35.Be3 Qe5 36.Rd1 Rg7 37.Qh6 Rd7 38.Bd4 Qb5 39.Qxe6 f4 40.Be2 Qg5 41.Bb6+ Kxb6 42.Qxd7 Bc7 43.Bf3 fxg3 44.hxg3 Qc5 45.Kg2 Qc3 46.Rh1 b3 47.Rh7 Qe5 48.Re7 Qd6 49.Qxd6 Bxd6 50.Re3 Kb5 51.Rxb3+ Bb4 52.Rb1 Kc4 53.Be4 1-0

 
(4) 13.gxh8=Q Qa5+ 14.Nd2 Qf5 15.O-O O-O-O 16.Qb3

 

Koziak-Vidoniak
Russia, 1991
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Be2 Bb7 9.e4 b4 10.e5 bxc3 11.exf6 cxb2 12.fxg7 bxa1=Q 13.gxh8=Q Qa5+ 14.Nd2 Qf5 15.O-O O-O-O 16.Qb3 Bd6 17.Nc4 Be7 18.Qg7 Nc5 19.Qb4 Bh4 20.Be3 Qxa2 21.dxc5 Qxe2 22.Nd6+ Rxd6 23.cxd6 Qxf1+ 24.Kxf1 Qd3+ 25.Ke1 Qxe3+ 26.Kd1 Qd3+ 27.Kc1 Qf1+ 28.Kb2 Qxf2+ 29.Ka3 Qe3+ 30.Ka4 Qd3 31.Qxh4 Qd1+ 32.Ka3 Qd3+ 33.Ka2 Qa6+ 34.Kb3 1-0

 

Sadler-Kaidanov
Andorra, 1991
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Be2 Bb7 9.e4 b4 10.e5 bxc3 11.exf6 cxb2 12.fxg7 bxa1=Q 13.gxh8=Q Qa5+ 14.Nd2 Qf5 15.O-O O-O-O 16.Qb3 Nc5 17.Qb4 Qc2 18.Qf6 Qcc3 19.Qxc3 Qxc3 20.Nf3 Ne4 21.Qxf7 c5 22.Bf4 Bd6 23.Qxe6+ Kb8 24.Bxd6+ Nxd6 25.Qe7 Qa5 26.dxc5 Nc8 27.Qe5+ Qc7 28.Qxc7+ Kxc7 29.Rd1 Re8 30.Bb5 Rg8 31.Rd7+ Kb8 32.c6 Ba8 33.Ne5 a5 34.Rxh7 1-0

 

Gil Capape-San Segundo
Saragossa, 1992
1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Be2 Bb7 9.e4 b4 10.e5 bxc3 11.exf6 cxb2 12.fxg7 bxa1=Q 13.gxh8=Q Qa5+ 14.Nd2 Qf5 15.O-O O-O-O 16.Qb3 Nc5 17.Qa3 Qxd4 18.Qxd4 Rxd4 19.Nc4 Qc2 20.Qf3 Nd7 21.Be3 c5 22.Qxf7 Qxe2 23.Bxd4 Qe4 24.Qxf8+ 1-0

 

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And now you, the extremely tactically inclined player, can analyze these preceding games, and perhaps even use the ideas you can find, for your future games.